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  1. To obtain the necessary information on fuel debris and water leakages during the decommissioning task of the Fukushima Daiichi Nuclear Power Plant, an ultrasonic-based method was proposed for future internal i...

    Authors: Zhenyu Wang, Gen Endo, Masashi Takahashi, Hiroyuki Nabae, Koichi Suzumori, Nobuyoshi Tsuzuki, Hideharu Takahashi, Kazushi Kimoto, Tomonori Ihara and Hiroshige Kikura
    Citation: ROBOMECH Journal 2020 7:34
  2. This paper describes development of a mobile robot using semicircular wheels on uneven terrain. It performs the crawl gait on flat ground without changing potential energy and the butterfly gait to climb over ...

    Authors: Kanta Yamamoto and Takeshi Aoki
    Citation: ROBOMECH Journal 2020 7:32
  3. This paper proposes a novel, simple and high-efficient submerged structural stabilization system for a self-stabilizing buoy that provides a stable platform for oceanographic and meteorological sensors. The pr...

    Authors: Mina Malek Azari, Jose Victorio Salazar Luces and Yasuhisa Hirata
    Citation: ROBOMECH Journal 2020 7:30
  4. A new approach to the active fault diagnosis (AFD) for input redundant plants is presented in this paper. A test signal which helps the diagnosis is injected to the plant in addition to nominal control input i...

    Authors: Natsuki Kawaguchi, Nozomu Araki, Takao Sato, Masaharu Kuroda and Toshihiko Asami
    Citation: ROBOMECH Journal 2020 7:28
  5. It is a problem that the poor gait function of many elderly people affects their activities of daily living (ADL), and deteriorates their quality of life (QoL). To enhance rehabilitation of the gait function, ...

    Authors: Katsushi Ogawa, Kenji Uegami, Itaru Chiba, Kyono Uno, Hiroki Aoyama, Kazuo Yonenobu and Seonghee Jeong
    Citation: ROBOMECH Journal 2020 7:27
  6. Teleoperated robots are expected to perform tasks in extreme environments such as disaster sites. However, only few teleoperated robots are used for this purpose because their usability is poor compared to hum...

    Authors: Yoshihiro Tamura, Hisanori Amano and Jun Ota
    Citation: ROBOMECH Journal 2020 7:26
  7. In this paper, a navigation and environment mapping method is presented for small exploration robots that use hopping motion. While previous research about hopping rovers mostly focuses on mobility and mechani...

    Authors: Gabor Kovacs, Yasuharu Kunii, Takao Maeda and Hideki Hashimoto
    Citation: ROBOMECH Journal 2020 7:25
  8. Large-sized gantry-type linear motor sliders are widely used in industry (e.g. in liquid crystal panel production equipment). An appropriate control model is important for deriving control methods to improve c...

    Authors: Tetsuya Ojiro, Toshiyuki Tachibana, Hideki Honda, So Watanabe, Hiroshi Hamamatsu and Kazuhiro Tsuruta
    Citation: ROBOMECH Journal 2020 7:24
  9. The wheelchair is the major means of transport for elderly and physically disabled people in their daily lives. However it cannot overcome architectural barriers such as curbs and stairs. In this study, we dev...

    Authors: Yuya Onozuka, Nobuyasu Tomokuni, Genki Murata and Motoki Shino
    Citation: ROBOMECH Journal 2020 7:23
  10. This paper proposes a stair-climbing gait for a four-wheeled vehicle. The idea and methodology of climbing stairs are described, and the results of experiments are shown. Crawler-type vehicles and vehicles wit...

    Authors: Shuro Nakajima
    Citation: ROBOMECH Journal 2020 7:20
  11. One of the main challenges for the elderly is insufficient lower limb strength during sit-to-stand movement, which may be improved by supporting the joint externally. Existing lower extremity exoskeletons use ...

    Authors: Sarin Kittisares, Hiroyuki Nabae, Gen Endo, Koichi Suzumori and Ryo Sakurai
    Citation: ROBOMECH Journal 2020 7:16
  12. In robot teleoperation, a lack of depth information often results in collisions between the robots and obstacles in its path or surroundings. To address this issue, free viewpoint images can greatly benefit th...

    Authors: Ren Komatsu, Hiromitsu Fujii, Yusuke Tamura, Atsushi Yamashita and Hajime Asama
    Citation: ROBOMECH Journal 2020 7:15
  13. As the geriatric population expands, caregivers require more accurate training to handle and care for the elderly. However, students lack methods for acquiring the necessary skill and experience, as well as su...

    Authors: Miran Lee, Ko Ameyama, Hirotake Yamazoe and Joo-Ho Lee
    Citation: ROBOMECH Journal 2020 7:12
  14. Stretching is a major treatment for restoring the ankle range of motion while decreasing the ankle stiffness. An automatic stretching machine can provide long-term continual stretching at home. However, no com...

    Authors: Yuma Shiraishi, Shogo Okamoto, Naomi Yamada, Koki Inoue, Yasuhiro Akiyama and Yoji Yamada
    Citation: ROBOMECH Journal 2020 7:10
  15. Artificial intelligence (AI)-based robots have become popular in various fields, thereby increasing the demand for care robots. Such care robots recognize or estimate factors such as human states and then perf...

    Authors: Mizuki Takeda, Yasuhisa Hirata, Yueh-Hsuan Weng, Takahiro Katayama, Yasuhide Mizuta and Atsushi Koujina
    Citation: ROBOMECH Journal 2020 7:8
  16. This paper examines the feasibility of automated alignment in sagittal direction in MR-TRUS fusion biopsy of the prostate by comparing the prostate contour in axial images between different modalities. In the ...

    Authors: Riki Igarasihi, Norihiro Koizumi, Yu Nishiyama, Kyohei Tomita, Yuka Shigenari and Sunao Shoji
    Citation: ROBOMECH Journal 2020 7:4
  17. This paper describes a vacuum suction-type end effector for depalletizing robots in distribution centers. The developed end effector has multiple suction pad units to which a bellows pneumatic actuator is appl...

    Authors: Junya Tanaka, Akihito Ogawa, Hideichi Nakamoto, Takafumi Sonoura and Haruna Eto
    Citation: ROBOMECH Journal 2020 7:2
  18. One of the main sequelae of stroke is dificulty walking, which is characterized by a decreased gait velocity and asymmetrical walking patterns. The purpose of this research was initially focused on developing ...

    Authors: Kazuhiro Yasuda, Yuki Hayashi, Anna Tawara and Hiroyasu Iwata
    Citation: ROBOMECH Journal 2020 7:1
  19. A worm gear has the advantages of a large reduction ratio and non-backdrivability. Because of this non-backdrivability, it can maintain a joint angle without energy consumption. Today, many robots have large w...

    Authors: Toshio Takayama and Naoto Hisamatsu
    Citation: ROBOMECH Journal 2019 6:21
  20. Spatial change detection is a fundamental technique for finding the differences between two or more pieces of geometrical information. This technique is critical in some robotic applications, such as search an...

    Authors: Ukyo Katsura, Kohei Matsumoto, Akihiro Kawamura, Tomohide Ishigami, Tsukasa Okada and Ryo Kurazume
    Citation: ROBOMECH Journal 2019 6:20
  21. To achieve quantitative palpation in vivo, we developed a catheter-type tactile sensor composed of a polyvinylidene fluoride film for minimally invasive surgery. We evaluated the fundamental performance of the...

    Authors: Kazuto Takashima, Keisuke Ota, Masaki Yamamoto, Makoto Takenaka, Satoshi Horie and Kenji Ishida
    Citation: ROBOMECH Journal 2019 6:19
  22. In supermarkets or grocery, a shopping cart is a necessary tool for shopping. In this paper, we have developed an intelligent shopping support robot that can carry a shopping cart while following its owners an...

    Authors: Md Matiqul Islam, Antony Lam, Hisato Fukuda, Yoshinori Kobayashi and Yoshinori Kuno
    Citation: ROBOMECH Journal 2019 6:18
  23. In this paper, toward robotic gait assistance, we investigate the feasibility of a cane-type assistive mobile robot accompanying the user autonomously through a clinical pilot experiment. As widely known, gait...

    Authors: Shunki Itadera, Tadayoshi Aoyama, Yasuhisa Hasegawa, Keita Aimoto, Kenji Kato and Izumi Kondo
    Citation: ROBOMECH Journal 2019 6:17
  24. In this study, the novel approach of real-time video stabilization system using a high-frame-rate (HFR) jitter sensing device is demonstrated to realize the computationally efficient technique of digital video...

    Authors: Sushil Raut, Kohei Shimasaki, Sanjay Singh, Takeshi Takaki and Idaku Ishii
    Citation: ROBOMECH Journal 2019 6:16
  25. Brain damage due to stroke often leaves survivors with lateral functional motor deficits. Bimanual rehabilitation of the paretic arm is an active field of research aimed at restoring normal functionality by ma...

    Authors: Matti Itkonen, Álvaro Costa, Hiroshi Yamasaki, Shotaro Okajima, Fady Alnajjar, Takatsune Kumada and Shingo Shimoda
    Citation: ROBOMECH Journal 2019 6:14
  26. Automation and labor saving in agriculture have been required recently. However, mechanization and robots for growing fruits have not been advanced. This study proposes a method of detecting fruits and automat...

    Authors: Yuki Onishi, Takeshi Yoshida, Hiroki Kurita, Takanori Fukao, Hiromu Arihara and Ayako Iwai
    Citation: ROBOMECH Journal 2019 6:13
  27. This paper presents fabrication and actuation methods for a soft microrobot with a hybrid structure composed of soft microactuators and a rigid supporting body. This hybrid structure enables actuation of the m...

    Authors: Tomoki Watanabe, Yoshiyuki Yokoyama and Takeshi Hayakawa
    Citation: ROBOMECH Journal 2019 6:11
  28. Breast cancer diagnosis has been mostly accomplished through imaging. These methods have great advantages in being able to detect the presence and location of breast cancer. However, it is difficult to disting...

    Authors: Satoshi Miura, Hidekazu Ishiuchi, Yuta Shintaku, Victor Parque, Ayako Torisaka and Tomoyuki Miyashita
    Citation: ROBOMECH Journal 2019 6:10
  29. One of the recommended post-stroke gait rehabilitation treatments is the use of an ankle–foot orthosis. In clinical practice, it is important to adjust the torque of the ankle–foot orthosis assistance to suit ...

    Authors: Masataka Yamamoto, Koji Shimatani, Masaki Hasegawa and Yuichi Kurita
    Citation: ROBOMECH Journal 2019 6:9
  30. Recently, wearable extra robotic limbs that aim to enhance the functionality and capability of human operators as extra arms or fingers have become an active research subject among robotics researchers. Improv...

    Authors: Yaonan Zhu, Takayuki Ito, Tadayoshi Aoyama and Yasuhisa Hasegawa
    Citation: ROBOMECH Journal 2019 6:7
  31. This paper proposes a navigation system of a personal mobility robot in informationally structured and unstructured environments. First, we introduce a group of robots named Portable Go, which are equipped wit...

    Authors: Yuuta Watanabe, Akio Shigekane, Kohei Matsumoto, Akihiro Kawamura and Ryo Kurazume
    Citation: ROBOMECH Journal 2019 6:6